.mu_box {
  padding-left: 20px;
  padding-right: 20px;
}
.mu_box .backToIndex {
  font-size: 18px;
  float: left;
  margin-left: 10px;
  margin-top: 10px;
}
.mu_box .backToIndex em {
  font-size: 24px;
}
.notice {
  margin-top: 5px;
  margin-bottom: 20px;
  text-align: center;
}
h1 {
  text-align: center;
}
hr {
  margin-bottom: 20px;
}
/* question_box开始 */
.mu_box .question_box {
  font-size: 17px;
  border: 2px solid #bbb9b9;
  padding: 15px 20px;
}
.question_box {
  text-align: left;
  margin: 0 25px 18px 25px;
}
.question_box .red {
  float: left;
  width: 50px;
}
.question_box .green {
  float: left;
  width: 500px;
}
.question_box .blue {
  float: left;
}
.question_box .question_type {
  margin-bottom: 15px;
  font-weight: bold;
}
/* question_box 模板
<div class="question_box clearfix">
    <div class="red">
          Q&nbsp;<em>1</em>
    </div>
    <div class="green">
          <div class="question_type">单选题</div>
          <div>选项一</div>
          <div>选项二</div>
    </div>
    <div class="blue">
          <div class="question_type">数据占比</div>
    </div>
</div>
*/
/* question_box结束 */
